> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/android/forms/export-data.md).

# Extract FDF data from a PDF in Android

Learn how to extract data from PDF to FDF and export FDF as XFDF. Disable annotation auto-save and manage annotation updates with PdfViewCtrlTabFragment2::setSavingEnabled. Explore PDF Form Fill and F

To extract data from PDF to FDF, then export FDF as XFDF

{% tabs %}
{% tab title="Java" %}
{% code lineNumbers="true" %}

```java
PDFDoc doc = new PDFDoc(filename);

// Extract annotations to FDF.
// Optionally use e_both to extract both forms and annotations
FDFDoc doc_fields = doc.fdfExtract(PDFDoc.e_annots_only); //PDFDoc.e_forms_only

// Export annotations from FDF to XFDF.
doc_fields.saveAsXFDF(output_xfdf_filename);

// Optionally write XFDF to a string
String XFDF_string = doc_fields.saveAsXFDF();
```

{% endcode %}
{% endtab %}

{% tab title="Kotlin" %}
{% code lineNumbers="true" %}

```kotlin
val doc = PDFDoc(filename)

// Extract annotations to FDF.
// Optionally use e_both to extract both forms and annotations
val doc_fields = doc.fdfExtract(PDFDoc.e_annots_only) //PDFDoc.e_forms_only

// Export annotations from FDF to XFDF.
doc_fields.saveAsXFDF(output_xfdf_filename)

// Optionally write XFDF to a string
val XFDF_string = doc_fields.saveAsXFDF()
```

{% endcode %}
{% endtab %}
{% endtabs %}

{% hint style="warning" %}
**Disable annotation auto-save**

Annotation updates by default will automatically save to the PDF. Set [PdfViewCtrlTabFragment2::setSavingEnabled](https://sdk.apryse.com/api/android/javadoc/reference/com/pdftron/pdf/controls/PdfViewCtrlTabFragment2.html#setSavingEnabled\(boolean\)) to false to disable auto-save.
{% endhint %}

[PDF Form Fill and Form Data Extraction](/android/get-started/samples.md#fdf) Full sample code which illustrates basic FDF merge/extract functionality and full support for FDF (Forms Data Format)


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